DL 9936 then DL 3163 at Atlanta
ILN → Atlanta → Birmingham (Alabama)
Timetable, Atlanta time
15:29DL 9936 from ILN at the gate
15:25DL 3163 to Birmingham (Alabama) leaves the gate
23 h 56 apart on the timetable, overnight
DL 3163 leaves 23 h 56 after DL 9936 arrives on the timetable: more than half a day, so not a connection we count.